2 Answers
2

Assuming that the MAC has a valid connection to the internet you have to make sure that an installation of the drivers for the MAC on the Windows XP was installed. This is done by following step three on this pdf. If this doesn't solve the issue a reinstall of the XP maybe needed. This is the extent of my knowledge of MAC, but hope that this helps.

After services and ncpa.cpl try clicking 'create a new connection'in the right pane of the network connections window, this should bring up an icon, it looks like her icon was an old connection and thus would have been there already,then carry on as shown.
---sorry ben missunderstood.